Internal-combustion engine



N. ISACHSON.

INTERNAL COMBUSTION ENGINE.

APPLICATION, FILED JUNE I, 1921.

1 A23, 7 1 EB Patented July 25, 1922.

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INTERNAL-COMBUSTION ENGINE.

Application filed June 1, 1921.

T 0 a ZZ w ham it may concern:

Be it known that I,'=NoRMAN .IsAoHsoN, a

citizen of the United States, and residentments in thermo-water cooling systems used in internal combustionengines of the motor vehicle ty e and aims to provide simple, economica and efficient means for preventing overheating of the engines which may be easily applied to standard constructions and which will be automatic in use and not liable to get out of order.

To this end the invention includes the combination with a motor vehicle radiator and the flow and return pipes to the engine water jacket, of a steam injector for increasing the circulation of the water.

An embodiment of the invention is illustrated in the accompanying drawing in which- The figure is a fragmentary side eleva- Many of the motor vehicles in use today have their engines cooled by the thermo water circulating system, that is, one in which the heat derived from the engine causes the Water to rise and flow into the upper part of the radiator where it is subjected to the cooling action of the air drawn through the radiator by the fan, the cooled water flowing to the bottom of the radiator and returning by a lower pipe connection to the engine.

when the water in the system gets heated up sufficiently to boil the circulation has been found insufficient to keep the engine properly cooled, such overheating frequently occurring in mountain climbing and in work athi'gher atmos heric temperatures or altitudes considerab fy above sea level, and also in pulling through long stretches of sand or mud on the low gear or on warm days when traveling with the wind.

This objection I overcome by using the steam generated in the radiator as a means of increasing the rapidity of the Water circulation,

In the drawings 1 designates a motor vehicle radiator of the ordinary or any approved ty e, and 2 and 3 the flow and return pipes to t e engine which is shown conven- 5 designates the usual water Specification of Letters Patent.

Patented July 25, I922.

Serial No. 474,087.

overflow pipe which has its upper end extended up into suitable proximity to the filling cap 1. 6 designates a steam pipe which has one open end located within the radiator somewhat above the upper end of phe pverfiow pipe so as to be above the water eve The other end'of this pipe 6 extends into one of the pipe connections to the engine where it terminates in or is provided with an injector nozzle. In Fig. 1 I have shown the injector nozzle 6 as located in the pipe 2 which leads the water from the lower part of the radiator back to the engine, such being my preferred arrangement.

In operation the boiling of water generates steam in the radiator and due to the restricted water overflow pipe, such steam is under moderate pressure, which causes a portion of the steam to. pass through pipe 6 and nozzle 6 and by its ejector action inside the pipe 2 to increase the flow of water.

If the water overflow pipe is found too large to generate sufficient pressure it may be reduced by partially stopping up or closing either end thereof as by pinching. the sides of the tube towards each other.

Having thus described my invention, what I claim is:

1. The combination with a water cooled internal combustion engine and its radiator and the flow and return pipes connecting the same, of an injector located in one of said pipes and having a steam pipe connection to the top of the radiator.

2. In combination with an internal c0mbustion engine and its radiator having connecting flow and return pipes, said radiator having a water overflow pipe, a steam pipe having one end connected with the interior of the radiator above the upper end of the overflow pipe, and its other end connected to inject steam into one of said connecting pipes in the direction of normal flow of Water therein.

3. In combination with an internal combustion engine and its radiator having connecting flow and return pipes, said radiator having a water overflow pipe, a steam pipe having one end connected withv the interior of the radiator above the upper end of the overflow pipe, and its other end connected to inject steam into the pipe which conveys Water from the. radiator to the engine.

In testimony whereof, I affix my signature.

NORMAN ISACHJSON 

